+2 votes
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Environment Engineering 2

asked Feb 28 in Civil Engineering by Himanshu Jharwal
retagged Mar 1 by jiya | 8 views

1 Answer

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First stage BOD is carbaneous demand i.e oxygen required to decay the carboneous part of sewage 

Second stage of BOD is nitrogenous demand i.e it utilises the oxygen for nitrogenous part 

answered Mar 2 by anonymous